Vulcanizing-tool.



E. R. DRAVER.

vuLcANlzlNG TooL.

APPLICATION FILED AUG.5. 1916.

1,21 8,245. Patented Mar. 6, 1917.

2 SHEETS-SHEET 1.

E. R. DRAVER.

VULCANIZING TOOL. APPLICATION FILED AuG.5. I9`Is.

1,218,245. Patented Mar. 6, 191%;

2 SHEETS-SHEET 2.

EMIL n. DRAVER, or RICHMOND, INDIANA.

vULcANIzINe-Toor...

Specification of Letters lPatent.

'Patented Mar. c, 19; 7.

Application led August 5, 1916. Serial No. 113,366.

To all whom t may concern.'

Be it known that I, EMIL R. DRAVER, a citizen of the United States, residing at Richmond, in the "county of Wayne and State of Indiana, have invented certain new and useful Improvements in Vulcanizing- Tools; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an extremely simple, highly eilicient and convenient vulcanizer 'tool or device, by the use of which patches may be conveniently applied at a minimum cost to the inner tubes of pneumatic tires.. Generally stated, the invention consists of the novel construction and combination of parts hereinafter described and defined in the claims.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Figure 1 is .a perspective view showing the improved vulcanizer tool;

Fig. 2 shows'the tool partly in side elevation and partly in vertical section;

Fig. 3 is a section on the line 3-3 of Fig. l;

Fig. 4 is a vertical longitudinal section of the tool, some parts being broken away, and showing the same in use to hold a patch and solid combustible element against the inner tube; l

Fig. 5 is a plan view of the so-called Pan;

Fig. 6 is a section on the line 6-6 of Fig. 5;

Fig. 7 is a plan view of the solid combustible element;

Fig. 8 is a section on the line 8-8 of Fig. 7;

Fig. 9 is a plan view.of the patch;

Fig. l0 is a section on the line 10-10 of Fig. 9;

Fig. 11 is a plan view showing avslightly modified form of the solid combustible elemen't; and

Fig. 12 is a' section on the line 12-12 of Fig. 11, a portion of one jaw of the vulcanizer tool being shown in dotted lines.

The tool is in the form of a` pair of pliersand is made up of two levers 13 and 14 connected by an intermediate pivot.

This pivot is of novel construction and, as shown, is formed by providing the lever 13 with a cylindrical hinge hub 15 formed with a peripheral gap 16, and by providing the lever 14 with a cylindrical trunnion 17 that Works pivotally within the hub 15. This trunnion 17, for lightness, is made tubular, and at its ends, it is formed integral with side flanges of the lever 14, the said side iianges being connected thereto by webs 18 that are of slightly less circumferential dimensions than the gap 16. Furthermore, the said gap 16 and webs 18 are so related to the levers that said webs may be moved laterally through the gap 16 when and only when the levers arein the relative position shown by full lines in Fig. 2.

The lever 13, at its tube engaging end, has a disk-like clamping plate or platen 19. At the corresponding end, the lever 14 is provided with a finger or stud-like presser foot 20 that is approximately in axial alinement with 'the plate-19. Preferably, also, the lever 13 is formed with perforated lugs 21 that adapt it to be rigidly secured by screws not shown, to a bench or suitable support. when it is desired to use the tool as local fixture rather than as a portable too A coiled spring 22 is interposed between the handle ends of the levers 13 and 14.' This lspring 22 exerts a force tending to vhold the presser foot 20 against the clamp-,

ing plate or platen 19, and it must be placed in position after 'the levers 13' and 14 have been properly pivotally connected. When the two levers are in relative position shown by full lines in Fig. 2, they may be made by lateral movement, the one in respect to the other, to be moved into pivotal connection or separated. When they are thus properly connected and the lever 14 is moved into the position indicated by dotted lines inA Fig. 2, the spring 22 may be inserted between the handle ends thereof, and the said spring, when. thus inserted, and

. even when compressed solid, will prevent 4 55 is highly desirable because it throws the known composition adapted when lighted,

to produce the heat required for the vulcanization of the patch.

In Figs. 4, 5 and 6,the preferred form of pan is shown and is indicated by the numeral 23. .This pan, as shown, has an upwardly concave bottom and rounded edges and the bottom of the solid combusti-- ble element c is made to' fit the. bottom of the pan, Ibutis of considerably less diameter thanthe pan. This pan istpreferably of pressed sheet metal and may be used over and over again, so that it is really a part of the vulcanizing tool proper.

In the vulcanizing operation the tube a is placed on the clamping plate or platen 19, the patch is placed over the puncture thereof, the, pan is placed over the p-atch and the solid combustible element is placed in the said pan, as clearly shown in Fig. 4. The hand grip ends of the levers 13 and 14 then being released, the spring 22 will force the resser foot 20 tightly against the upper surflzice of the solid combustible element, and the said pan, patch and tube will then be tightly clamped together. The solid combustible element may then be lighted, and in burning, will produce the heat required for vulcanization. As the solid combustible element burns away, the spring 22 will cause the presser foot 20 to follow up, and hence will maintain the proper pressure on the patch during the entire vulcanizing opera-l tion, regardless of the burning away of the fuse. This arrangement is preferred because the solid combustible element, as well as the other velements are very firmly pressed to'place. However, if desired, the solid combustible element may be provided with a perforation through which the presser foot 20 may project into direct contact with the bottom of the pan. Such -a solid combustible element is .shown in Figs. 11 and 12, wherein the combustible element is indicated at 01, and its axial perforation at 02.

The plier or pivoted lever form of the tool hand engaged portion to points remote from the tube and gripping portions and prevents the former from being made hot by the burning of the solid combustible element. Hence, the tool may be handled and quickly removed the instant that the vulcanization of the patch is completed. Also, it enables the vulcanizing tool to be very quickly and easily applied in working position.

As the pan may be used over and overy again, it is not necessarily supplied with each solid combustible element, and econom)T in the patching vulcanizing operation is effected. The tool itself may be constructed linger-like presser footalined with the central portion of said cooperating clamping abutment, ythe latter having marginal portions that project far beyond the cooperating end of said presser foot, and spring means yieldingly pressing the said clamping members, the one toward'the other.

2; A vulcanizing device comprising a pair of pivotally connected levers, one of said levers having a pan-like clamping abutment and the other having a cooperating rigidly secured linger presser foot alined with the cebntralportion of said cooperating clamping abutment, and spring means applied to said levers for yieldingly pressing said presser foot toward said clamping abutment.

3. A vulcanizing device comprising a pair of pivotally connected levers, one of said levers havinga pan-like clamping abutment and the other having a cooperating rigidly secured finger-like presser foot alined with the central portion of the said cooperating clamping abutment, and a spring compressed between the handle ends of said levers.

4. A vulcanizing device comp-rising a pair of pivotally connected levers, one of said levers having a pan-like clamping abutment and the other having a cooperating rigidly secured finger-like presser foot alined with the central portion of the /said cooperating clamping abutment and three individual separable elements, to-wit, a pan, a vulcaniz' ing patch and a solid combustible element temporarily held together by the said abutment and presser foot, with the said vulcanizing patch opposed to said abutment and said combustible element opposed to said presser foot, and with the said presser foot'exerting its compressing force on the central portion of said pan.

5. A vulcanizing device comprising a pair of pivotally connected levers, one of said levers having a pan-like clamping abutment and the other having a cooperating rigidly secured finger-like presser foot alined with the central portion of the said cooperating clamping abutment and three individual separable elements to-wit, a pan, a vulcanizing patch and a solid combustible element llo Y temporarily held ment and presser foot, with the said vulcanizing patch opposed to -said abutment and said combustible element Opposed yto said presser foot, and with the said presser foot exerting its compressing force on the central portion of said pan, and the said pan having an inwardly bulged bottom and outwardly flaring rim, said rim projecting beyond the margin oi said combustible element.

6. A' vulcanizing tool comprising a pair of levers having opposing clamping devices at one end, one of said levers. havmg a cylindrical hinge hub with a peripheral gap and the other of said levers having a' truntogether-by the said abutthrough said gap to permit said trunnion to i be pivotally seated in said hub, when the handle ends of said levers are forced together, and a spring interposed between the handle ends of said levers, and when in position, presenting the said .levers to be moved to .a position in# which they may be separated at their pivotal connection.

In testimony whereof I aix my signature in presence of two witnesses.

EMIL, R. DRAYER. 

